Authors & Presenters

Jon-Eric Ziaer is the principal of Reedy High School in Frisco, Texas. Previously, he served as associate principal at Liberty High School in Frisco ISD, which he helped lead to Model PLC status. He was previously a curriculum director and a high school social studies teacher.

Gwendolyn Zimmermann, PhD, is director of assessment, research, and evaluation at Adlai E. Stevenson High School District 125, a model professional learning community district in Lincolnshire, Illinois.